输入：
df1=pd.DataFrame({
"BusId":['abc1','abc2','abc3'],
"Fair Increase":[2,3,5]
})
df2=pd.DataFrame({
'BusId':['abc1','abc2','abc3','abc4','abc5'],
"Fair":[5,6,7,8,9]
})
只需要计算df2上df1中存在的BusId。
计算增加的公平
df2公平+ df1公平增长
预期产量：
BusId Fair Increased Fair
abc1 5 7
abc2 6 9
abc3 7 12
最佳答案
您可以使用df.merge合并df2和df2，创建新列Increased Fair并删除旧列Fair Increase
>>> df3 = df2.merge(df1).set_index('BusId')
>>> df3['Increased Fair'] = df3['Fair'] + df3['Fair Increase']
>>> del df3['Fair Increase']
>>> df3
Fair Increased Fair
BusId
abc1 5 7
abc2 6 9
abc3 7 12